1.指出现在报纸里的内容，那么“在报纸上”用in the newspaper/paper
2. in newspaper/paper用报纸包着的
3.不是报纸上内容，而是东西压在报纸上，这时“在报纸上”用on the newspaper/paper
请看下面的经典例句：
I read about it in the paper .
我从报上得知这件事。
Her name has appeared in the newspaper.
她的名字上了报。
We advertised for staff in a local newspaper
我们在一家地方报纸上刊登了招聘广告。
I read instalments of the story in the newspaper last year.
我去年在报纸上读过这故事的分期连载。
My father saw this in the newspaper and he gave me absolute hell.
我父亲在报纸上看到这个消息后把我骂了个狗血淋头。
His remarks were attacked in the newspaper.
他的言论在报纸上受到了抨击。
They read their daughter's allegations in the newspaper.
他们从报纸上看到了女儿的说法。
He found two pots, each wrapped in newspaper.
他发现了两个分别用报纸包着的罐子。
There is a pair of glasses on the newspaper.
在报纸上有一副眼镜。
知识拓展：
on paper 有两个方面的意思：
1.写下来；笔录 ；写在纸上；记录（when you put sth on paper , you write it down）
It was the first time I had put it all down on paper. I found it helped.
这是我第一次把所有的东西都写在纸上，我觉得这有帮助。
Her colourful oils and works on paper have a naive, dreamlike quality.
她那些色彩斑斓的油画与纸上作品给人一种天真、梦幻般的感觉。
I poured my thoughts out on paper in an attempt to rationalize my feelings.
为了对自己的感情作出合理的解释，我把想法全都写在纸上。
It is important to get something down on paper
把一些东西写在纸上很重要。
Never put anything down on paper which might be used in evidence against you at a later date
一定不要写下任何书面的东西，以免日后被用作对你不利的证据。
Ferris has a rare ability to record her observations on paper
费里斯具备把自己的观察结果记录下来的超强能力。
The idea has been going around in my head for quite a while and now I am getting it down on paper.
这个想法在我脑海里萦绕许久了，我现在就将它写在纸上。
2.仅照字面看；理论上
judged from written information only, but not proved in practice
The idea looks good on paper .
仅就字面看，这个主意不错
We got whacked. On paper we should have wiped the floor with them.
我们被轻易地击败了。按理说我们本应该大败他们。
These figures may look good on paper but are cold comfort to the islandersthemselves.
这些数字理论上看来可能不错，不过对岛民们起不到安慰的作用。
The family is estimated to have been worth, on paper at least, more than £ 1.1billion.
据估计，这个家族理论上至少拥有11亿英镑以上的财富。
另外：
a newspaper 报纸
a local/national paper
地方性 / 全国性报纸
a daily/evening/Sunday paper
日 / 晚 / 星期日报
